The average of 5 consecutive odd numbers is 75. By adding which number, will the average become 76?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e 81
The average of five consecutive odd numbers is 75 so the numbers would be 71, 73, 75, 77 & 79 then,
⇒ Average = 75 × 5 = 375
The sum of six numbers of average 76 will be = 76 × 6 = 456
Difference = 456 - 375 = 81